surreptitious

  • (s) marked by quiet and caution and secrecy; taking pains to avoid being observed
    • a furtive manner
    • a sneak attack
    • stealthy footsteps
    • a surreptitious glance at his watch
    furtive, sneak, stealthy, sneaky,
  • (s) conducted with or marked by hidden aims or methods
    • clandestine intelligence operations
    • cloak-and-dagger activities behind enemy lines
    • hole-and-corner intrigue
    • secret missions
    • a secret agent
    • secret sales of arms
    • surreptitious mobilization of troops
    • an undercover investigation
    • underground resistance
    clandestine, cloak-and-dagger, hush-hush, undercover, hole-and-corner, hugger-mugger, secret, underground,

Synonyms

furtive sneak stealthy sneaky clandestine cloak-and-dagger hush-hush undercover hole-and-corner hugger-mugger secret underground

Words of close approximity

surreptitiously